Aftermarket Oil Cooler?

[flyboy1294]

My 400ex always gets HOT on slower trails, I figured a larger oil cooler would make a major difference. But I've looked everywhere and haven't seen anything at all for the 400ex. Is there anything out there? Or maybe a cooler for another atv that will work?

[nakomis0]

I think the best setup is an auxiliary oil cooler that re routes your oil and throws it on the cam.

Heres a link to the instructions. I built mine from Ramchargers and the cooler I use is a transmission cooler... I think I got it off an old bronco 2 in a junkyard.... :)

oil mod instructions (http://webpages.charter.net/tandrus4700/400exCoolerMod.pdf)

And heres my pic that I have posted a dozen times before .. but I think its a great pic...

http://memimage.cardomain.net/member_images/7/web/343000-343999/343319_42_full.jpg

[matt14c]

Alot of people are running the spal fan and say that helps a ton especially if your running slower trails. Also maybe try a larger oil tank that holds and extra quart. There is a larger cooler through some company and if you look in the spal fan sticky at the top of the 400 forum he mentions it.

[flyboy1294]

Originally posted by nakomis0
I think the best setup is an auxiliary oil cooler that re routes your oil and throws it on the cam.

Heres a link to the instructions. I built mine from Ramchargers and the cooler I use is a transmission cooler... I think I got it off an old bronco 2 in a junkyard.... :)

oil mod instructions (http://webpages.charter.net/tandrus4700/400exCoolerMod.pdf)

And heres my pic that I have posted a dozen times before .. but I think its a great pic...

http://memimage.cardomain.net/member_images/7/web/343000-343999/343319_42_full.jpg

nakomis0, I am a little unclear on those directions you gave me, do you have any more pictures? That may help...

EDIT:
I have it down until step 3, but that part is slightly unclear. Then again I don't have the engine apart in front of me, so maybe that is necessary.

[flyboy1294]

Originally posted by matt14c
Alot of people are running the spal fan and say that helps a ton especially if your running slower trails. Also maybe try a larger oil tank that holds and extra quart. There is a larger cooler through some company and if you look in the spal fan sticky at the top of the 400 forum he mentions it.

I will definitely install a fan, but I think I need a little better cooling than that. And I did see the thread, but the oil cooler was discontinued and I can't even find a used one :(

[Snipe]

Man I been looking to your best bet is going to be to measure your frame and buy a universal cooler on ebay there not to bad in price and will most likely be what you need.

I cant find anything that just bolts right on in its place been searching for awhile now.

Oversized oil tank will only add more weight that extra quart of oil will eventually get just as hot as the rest of the oil and be in the same boat as a stock oil tank.

I can say with the spal fan installed on it and air scoops my motor never gets hot enough to tick when I shut it off with just thoughs to mods.

[nakomis0]

Originally posted by flyboy1294


EDIT:
I have it down until step 3, but that part is slightly unclear. Then again I don't have the engine apart in front of me, so maybe that is necessary.

Step 3 is just saying you need to block off the old oil hole. Drill it, tap it, plug it.

I can try and get a pic of my axillary oil cooler. Its just a transmission cooler. I went to a junkyard one day and just walked around looking at transmission coolers.

The cooler has a few benefits, extra cooling through the cooler and the hose lines, larger oil capacity and now its throwing oil on top of the cam. Its also failure proof, unless your oil pump goes out.

[dariusld]

Link FST oil cooler (http://atv.off-road.com/atv/article/articleDetail.jsp?id=191530)

The original instructions say to use a small bearing and JB weld it, in that hole.

[dariusld]

This is the original kit (http://www.fourstroketech.net/)

The kit was to expensive for many, so they just started copying this one for alot less. Just make sure you don't go to big or you will lose pressure, so they say.

Another less expensive version (http://www.jegs.com/i/Perma-Cool/771/1008/10002/-1)

[flyboy1294]

Thanks for all the links. For $70 I don't think I can go wrong.

Snipe
Does the ticking sound mean over-heating? Because I have noticed it when my atv gets REALLY warm. Its not the cam chain, or valves. I'm running a fresh rebuild.

If that is the case, I'm going to get a set of airscoops, Spal fan, and an Aux. oil cooler here this weekend.

[Snipe]

No the ticking does not mean over heating, all air cooled motors will do this and most water cooled motors will after longer periods of riding. With the setup I put on it that is just how much cooler it has kept my bike. That is a huge difference expecially when running in the summer time when your running temps are higher.

[flyboy1294]

Originally posted by Snipe
No the ticking does not mean over heating, all air cooled motors will do this and most water cooled motors will after longer periods of riding. With the setup I put on it that is just how much cooler it has kept my bike. That is a huge difference expecially when running in the summer time when your running temps are higher.

Oh ok, So you just have the scoops and the spal, no aux. cooler?

[Wheelie]

I've been toying with the idea of installing an auxillary cooler on my EX, mainly to ensure cylinder head temps stay in check if/when I decide for more displacement and compression.

The two I've been looking at:

http://www.summitracing.com/parts/DER-13210/

http://www.summitracing.com/parts/PRM-1001/

Either would be easy to package and install.

[RIDEREDson]

someone needs to do one and make a good write out for a sticky.

[Snipe]

Yup all I have is the UM air scoops and spal fan. Air scoops work great in open dirt roads and such, when riding in the fields or trails the fan comes into purpose.

With the scoops you can run and put your hand down behind them and the air is pushing through so hard it pushes your hand backwords.

The fan does the same thing with both running you will have awesome cooling. I would like to install a oversized cooler but as for the oversized tank I dont think the added weight would do anything other than just take it longer for the oil to get hot.

[flyboy1294]

Originally posted by Snipe
Yup all I have is the UM air scoops and spal fan. Air scoops work great in open dirt roads and such, when riding in the fields or trails the fan comes into purpose.

With the scoops you can run and put your hand down behind them and the air is pushing through so hard it pushes your hand backwords.

The fan does the same thing with both running you will have awesome cooling. I would like to install a oversized cooler but as for the oversized tank I dont think the added weight would do anything other than just take it longer for the oil to get hot.

Alright, I'll get those two items for sure. I ran all day today at the strip mines and only had it get hot towards the end of the ride (Jumping and reving high in 3rd gear, probably not atv's fault). Its slow trails that kill it.

[Snipe]

Yup the slow trails means not much air moving over the head and gets it hot, head through a field with handle bar high grass and it gets burning your leg with liquid steel hot lol.

Thoughs two made the most giant improvement your best bet is ebay look up 4" spal fan the Pull fan is what you want there like $36 with free shipping and the push fans can be wired to pull and there like $29 with free shipping. I wired mine up to a switch and installed it on the dash so I can turn it on and off.

Its pretty simple mod and is the best thing to do IMO.

[powertechn2]

i used one from either be cool or permacool...


looking back, its this one... bottom of page

http://perma-cool.com/Catalog/Cat_page15.html


i think mine may have been the cooler with the turbulator thing inside that sloshes the oil around and adds cooler area to the actual cooler itself.http://perma-cool.com/Catalog/Cat_page03.html


it was cheap imo, works good, has directions and everything neededl, and was wayy cheaper than ramchargers wanted for one when i looked there.

[sab24711]

but with the fan the scoops the aux oil and the bigger tank. cant you run the risk of the oil being to cool? and you can wire the fans to pull when they push? i know some blades on the fans are only meant for one way air flow.

[powertechn2]

i have never heard of having an issue from too cool oil temps, i have cold seized engines, from getting on them while they were cold, kinda common when some jack hops onto your jet ski and just starts it and pins it going across the lake. i didnt opt for the larger tank, just because of weight, the cooler itself and hoses holds about extra half quart of oil or so.

as for the fans, im not really sure what fan they are running, but quite a few can be reversed.


if you put several thou into an engine, its worth a couple hundred to try to keep it cooler, esp in an air cooled application, that in itself will keep it together longer.
i have seen several cases of dead ex's strictly from not changing oil often enough, and overheating to the point that the oil just burns.

[powertechn2]

the kit i used came with directions, and all necessary parts.

the directions showed a quad, but pic was different than an ex, but same theory, same oil galley that you haveto block off.

other than tapping the case, and the valve cover, its simple

[dariusld]

Originally posted by powertechn2
the kit i used came with directions, and all necessary parts.

the directions showed a quad, but pic was different than an ex, but same theory, same oil galley that you haveto block off.

other than tapping the case, and the valve cover, its simple

How does the perma-cool oil cooler block off the galley? Did you notice a cooling, obviously there is,but is it noticeable? Was it hard finding the exact location to tap. Is this kit installed just like FST's, just different parts?

[powertechn2]

i think pretty much all the kits are the same, it was fairly easy to see where to drill and tap it at, i had the shop that did my engine do it while it was in, and yea, i noticed a difference in cooling, but then again, its a 461 now, so i did it mainly cause i knew it would need it, and it came with a bb or small ball bearing that you j-b welded in the hole.

the only reason i went with permacool is cause they seem to have better actual coolers, aside from the cooler, its all fittings and hose and zipties.

[RIDEREDson]

Originally posted by Snipe
I would like to install a oversized cooler but as for the oversized tank I dont think the added weight would do anything other than just take it longer for the oil to get hot.


Not really, That extra quart gets to sit there longer. It will be cooler by the time it gets into the motor. Every little bit helps.

[nakomis0]

Originally posted by RIDEREDson
Not really, That extra quart gets to sit there longer. It will be cooler by the time it gets into the motor. Every little bit helps.

Problem with the oversized tank is it sits closer to the exhaust. They do have one the has holes in it. That ones pretty neat, I'm not even sure if it holds more oil, its a bigger tank but then it has these holes welded in it so, it prolly don't hold much more.

I went and took some pics of my aux. cooler. This is just mounted with zip ties and has been on for years with much trail abuse.

Looks like I used some type of caulk to prevent metal on metal rubbing. (Its been awhile.)

http://i146.photobucket.com/albums/r272/Trick440/400exEbay070.jpg
http://i146.photobucket.com/albums/r272/Trick440/400exEbay071.jpg
http://i146.photobucket.com/albums/r272/Trick440/400exEbay072.jpg
http://i146.photobucket.com/albums/r272/Trick440/400exEbay073.jpg
http://i146.photobucket.com/albums/r272/Trick440/400exEbay075.jpg
http://i146.photobucket.com/albums/r272/Trick440/Oxford017.jpg
http://i146.photobucket.com/albums/r272/Trick440/Oxford016.jpg